Cutting Round Holes In Sheet Metal

Lubricating the bit reduces friction and heat buildup which makes drilling easier and your bits last longer.

Cutting round holes in sheet metal.

Follow few steps step 1. Punch a hole through the metal using a cold chisel and mallet or drill through with a heavy duty drill. If you are talking about a hole the size of your fist or odd shaped this works pretty well. Photo 3 shows how to cut through thick metal.

When cutting out a circle one or sometimes two cutting tools are rotated about a center point to. How to cut holes in corrugated steel. Or thicker use cutting fluid or a multipurpose oil like 3 in one. When drilling or punching a hole in sheet metal you more or less cut out the entire hole at once.

In this video we show you the best and safest way to cut a round hole into a can or rectangular duct. I guess i ve got holes on the brain lately as i am finishing up the hole wizard for the g wizard conversational cnc product. Be that as it may here is a neat idea from flyboy accessories for cutting larger holes in sheet metal. In response to a question about h.

All you do is use a normal drill bit 125 or so and drill a series of holes right next to each other like a chain inside of your scribed line. For drilling holes in steel that s 1 8 in. It s meant for creating lightening holes of the type seen when building aircraft or maybe just toolboxes and furniture that are built like wwii fighter planes. For easier to drill metals like aluminum brass or cast iron lubrication isn t usually necessary.

First if you want to cut a duct near the middle and use both ends mark and cut the duct before snapping it together. Measure from the edges of the sheet metal to the point at which you. There are two ways to cut round ducts. Then use a rotary bit or file or other method to clean it up the edge to your scribe line.

But when you come to the thicker locking seam you ll need the extra leverage of compound snips. For this step you ll need a compass ink and a center punch. You ll need a drill sheet metal snips a start collar. Use clamps to hold the sheet.

How to cut a round hole in sheet metal. Any tin snips will work for this. Create a paper pattern of the size and shape of hole you wish to cut.